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Reelmaster 3550−DHydraulic System Page 4 − 76
Piston Pump/Hydrostat
Figure 47
1. Engine mount bracket
2. Flange nut
3. Flange screw
4. Pump mount plate
5. Hardened washer
6. 10 mm cap screw (4)
7. 8 mm cap screw (1)
8. Hardened washer
9. Long spacer (4)
10. Short spacer (1)
1
2
3
4
5
6
7
8
9
10
FRONT
RIGHT
Piston Pump/Hydrostat Removal (Fig. 44 and 47)
1. Park machine on a level surface. Lower cutting units,
stop engine and engage parking brake. Remove key
from the ignition switch.
2. Raise and support hood.
WARNING
Before disconnecting or performing any work on
the hydraulic system, all pressure in the system
must be relieved. See Relieving Hydraulic Sys
-
tem Pressure in the General Information section
of this chapter.
3. Remove pump drive belt (see Drive Belt Removal in
this chapter).
4. Remove neutral arm assembly (see Neutral Arm Re-
moval in this chapter).
5. Thoroughly clean hydraulic hose ends and fittings on
piston pump/hydrostat and gear pumps to prevent hy-
draulic system contamination.
6. Disconnect the suction hose from the barbed fitting
on the bottom of the gear pump and drain hydraulic tank
into a suitable container.